package com.sky.service.impl;

import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.properties.JwtProperties;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import com.sky.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.JwtParser;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对-进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /*
     * 新增员工
     *
     * */
    @Override
    public void save(EmployeeDTO employeeDTO) {
        //新建员工
        Employee employee = new Employee();
        //拷贝传入的员工信息-需要属性名相同
        BeanUtils.copyProperties(employeeDTO, employee);

        //补全其他信息
        //设置账号状态
        employee.setStatus(StatusConstant.ENABLE);
        //设置初始密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置创建时间
        //employee.setCreateTime(LocalDateTime.now());
        //设置最后更新时间
        //employee.setUpdateTime(LocalDateTime.now());
        //记录创建人id
        //从线程中获取线程变量id
        //employee.setCreateUser(BaseContext.getCurrentId());
        //记录最后操作的操作人id
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);

    }

    /*
     * 分页查询员工信息
     *
     * */
    @Override
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        //查询总数--条件
        String name = employeePageQueryDTO.getName();
        Long sum = employeeMapper.select(name);

        System.out.println(sum);
        //获取页数-每页数据量
        int page = employeePageQueryDTO.getPage();
        int pageSize = employeePageQueryDTO.getPageSize();

        List<Employee> data = employeeMapper.selectPage(name, (page - 1) * pageSize, pageSize);

        return new PageResult(sum, data);
    }

    /*
     * 启用/禁用员工账号
     *
     * */
    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = new Employee();
        employee.setId(id);
        employee.setStatus(status);
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }

    /*
     * 根据id查询员工信息
     *
     * */
    @Override
    public Employee findById(Long id) {
        return employeeMapper.selectById(id);
    }

    /*
    * 编辑员工信息
    *
    * */
    @Override
    public void updateEmp(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }

}
